102957

Appears in sequences

• Numbers n such that n and n+1 have same sum of anti-divisors.at n=17A192282
• Integers m such that sigma(m) + sigma(m+1) + sigma(m+2) - sigma(m+3) <= 0, where sigma is the sum of divisors.at n=22A348698
• Semiprimes k such that k+1, k+2, 2*k+1 and 2*k+3 are also semiprimes.at n=10A362200